Improved process of meltingand refining iron for malleable-iron castings



UNITED STATES PATENT OEEIoE.

THOMAS J. OHUBB, OF WILLIAMSBURG, NEW YORK.

IMPROVED PROCESS OF MELTING AND REFINING IRON FOR MALLEABLE-IRONCASTINGS.

Specification forming part of Letters Patent No. 90,927, dated June 8,1869.

To all whom it may concern:

Be it known that I, THOMAS J. GHUBB, of Williamsburg, county of Kings,State of New York, have invented certain new Improvements in Process ofMelting and Refining Iron to be Cast into Fine Iron Castings.

The nature of my invention consists in the application of highly-heatedor superheated gas and heated air to the melting, reducing, and refiningof crude pig or cast iron into refined iron for fine iron castings, andalso in the application or combination of a gas-generator, a gas and airheating furnace or apparatus, and a combustion and a melting andrefining chamber, for melting, reducing, and refining common crude pigor cast iron into refined iron for fine-quality iron castings, and inthe application of the described )rocess of refining iron with theprocess of ma ring iron castings for malleable iron and other purposes.

Blade of Operation.

common crude pig or cast iron, and apply heated or superheated gas andhighly-heated air into the melting or combustion chamber, directly over,around, and through the openlypiled pigs of iron, until the m--tal ismelted, and then I regulate the quantity of heated gas, or the quantityof heated air to act upon the surface of the molten metal, until it isrefined. I then tap and cast into molds, in the usual way.

This improvement enables me to use common crude pig-iron in place of thebest highpriced irons, and to refine the cheap iron equal to the best,and suitable for fine castings, for converting into what are known asmalleableiron castings, thereby producing a great saving in the cost ofthe crude iron.

I claim- 1. The application of superheated gas and highly-heated air,for the purpose described.

2. The application and combination of a gas-generator, a gas and airheating furnace or apparatus, and a melting and refining chamber, forthe purpose set forth.

3. The process described of refining crude iron with the process ofmaking malleableiron castings.

THOS. .T. OHUBB.

Witnesses:

J AGOB REPPERT, JOHN STEWART.

